From the Rolls-Royce experimental archive: a quarter of a million communications from Rolls-Royce, 1906 to 1960's. Documents from the Sir Henry Royce Memorial Foundation (SHRMF).
Design flaws and operational difficulties with carburettors.
| Identifier | ExFiles\Box 93\2\ scan0032 | |
| Date | 13th February 1935 | |
| -2- Hs{Lord Ernest Hives - Chair}/Swdl.{Len H. Swindell}10/KW.13.2.35. There is no petrol drain provided, either from the bottom of the throttle bore, or the air intake well in case of flooding. The petrol pipe nuts are very inaccessible below the carburettors, as also are the float needles, for if any attention is necessary, due to flooding, it means that the whole carburetter has to be removed. Positioning of the needle and seat in the floatchamber cover, as per Phantom, would make these points much simpler. One of the chief difficulties in setting the slow running on these carburetters is the synchronising of the throttles. From our experience we should like to be able to adjust each carburetter independently on to a stop and then connect by a clamping screw, with a return spring provided on each throttle. The present springs, one for each pair of carburetters, are not strong enough to definitely return the throttles to the slow running position. Hs{Lord Ernest Hives - Chair}/L.H. Swindall. | ||